ADAU1452 Linux driver

Question

Hello! 
 I would highly appreciated if someone could refer to an ADAU1452 driver for linux? Maybe exist a driver for another similar AD device which can be used as a reference? 
 
 Thank you in advance! 
 
 Best regards, 
 
 Roman

DaveThib · Accepted Answer

Hello Roman, 
 My first inclination as the manager for this space on the forum was to move your question over to the Linux space. However, I see the manager of that space moved it here. I am not a Linux expert but I can give you an answer. No, there is no driver for the ADAU1452. The big reason is that it is fully programmable with custom programs so all the addresses of objects like volume controls and mutes and things a Linux driver needs to do will always be different in every user's program. So a custom driver will be needed. 
 There are two parts that have drivers and also have a SigmaDSP core that you can use as an example. The ADAU1701 is the first one to mention. The ADAU1761 is the other. You can find them here: Linux Drivers [Analog Devices Wiki] 
 What makes these two parts able to have a driver is because they both have converters that have mutes and volume controls in fixed registers. The ADAU1761 actually has an extensive analog front end and back end that has mixers and several volume controls all of which are always available as fixed registers. They both have a sigmaDSP core so anything you want to control within the DSP program via the driver would have to be custom programed. The ADAU1452 has no converters. I suggest in your design you should use the AD1938 codec to interface with the ADAU1452. All of our eval boards will use this codec and there is a driver for the codec in the link I gave you. By using the AD1938 codec with the DSP will give you the basic control of the audio and you might not have to do too much custom programming. Obviously, it depends on what you want to do. 
 Let us know if you need help with implementing your design. 
 Dave T)

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ADAU1452 Linux driver

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